people = 20
cats = 30
dogs = 15

if people < cats:
    print("太多的猫，世界末日！")

if people > cats:
    print("没有多少猫，世界是安全的！")

if people < dogs:
    print("世界是流口水！")

if people > dogs:
    print("世界是干的！")

dogs += 5

if people >= dogs:
    print("人多于或等于1A50F253.png。")

if people <= dogs:
    print("人口小于或等于1A51AFF6.png")

if people == dogs:
    print("人是狗！")